Page 5 of Realistic Police Siren Kit by Ramsey Electronics

SM3 5 SM3 5 TESTING THE SM3 For testing your SM3 you'll need: A speaker with an impedance from 3 to 45 ohms. Any style will do, but a horn type will give the most volume. Power source from 9 to 12 volts DC. A 9 volt battery will suffice for now. Pushbutton switch. A doorbell button works well, but simply touching two wires together will do. 1. Connect up the speaker to points 1 and 2. 2. Connect your pushbutton (or wires to touch) between point 4 and point 3 (the power connection). 3. Connect power to point 3 and ground to point 5. 4. Depress the button and you'll hear the characteristic upward wail of the police siren. TESTING THE SM3 For testing your SM3 you'll need: A speaker with an impedance from 3 to 45 ohms. Any style will do, but a horn type will give the most volume. Power source from 9 to 12 volts DC. A 9 volt battery will suffice for now. Pushbutton switch. A doorbell button works well, but simply touching two wires together will do. 1. Connect up the speaker to points 1 and 2. 2. Connect your pushbutton (or wires to touch) between point 4 and point 3 (the power connection). 3. Connect power to point 3 and ground to point 5. 4. Depress the button and you'll hear the characteristic upward wail of the police siren.

[close]